so i replaced the motherboard on my dual 867MHz G4 MDD. the computer turns on now, and i did a fresh 10.4.11 install...but i noticed that it says "Dual 800" instead of "Dual 867" in my "About This Mac" now. i typed "sysctl hw.cpufrequency" in the terminal and discovered that it is actually running at 800MHz, and not 867MHz. so why did i lose 67MHz with a new motherboard? it was the correct motherboard (820-1445-A)...any ideas?